文摘
Canister corrosion and concrete degradation lead to precipitation of secondary minerals and porosity reduction. The reduction of the porosities becomes especially relevant for t > 10,000 years. Pore clogging zones at the canister-bentonite and concrete-clay interfaces after 1 Ma are 1 and 3.3 cm thick, respectively. The hyperalkaline front (pH > 8) extends 2.5 m into the clay formation after 1 Ma. Our simulation results share the features of the models reported by others for similar engineered barrier systems.